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Finding the Fourth Proportional to 305,210.76, 457,225.74 and 171,685.32

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Solution

The fourth proportional to 305,210.76, 457,225.74 and 171,685.32 is: 257,195.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,210.76 : 457,225.74 = 171,685.32 : x
  2. Step 2: Convert to fraction form
    305,210.76/457,225.74 = 171,685.32/x
  3. Step 3: Cross multiply
    305,210.76x = 457,225.74 × 171,685.32
  4. Step 4: Simplify right side
    305,210.76x = 78,498,947,484.14
  5. Step 5: Solve for x
    x = 78,498,947,484.14/305,210.76
  6. Step 6: Final answer
    x = 257,195.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.